Book #0 in the Spirit Finder Files Learn more about the Being that haunts Storm and London Benson in this short story Olivia and her friends are excited to celebrate Halloween with awesome costumes, trick-or-treating, and a sleepover. It's their last year for trick-or-treating, and Olivia is determined to make it the best night ever. But her friend Ivy has plans of her own for their group of friends. Plans for revenge.